<?phprequire_once('CContainer.php');class CNavigationBar extends CContainer{	public $current_item = "";	protected $component_class = "CURL";	protected $inherit_stylesheets = false;		public function render_contents()	{		$r = "<ul>\n";		foreach($this->components as $item)		{			$r .= '<li><a ';			if ($this->current_item == $item)				$r .= 'id="current" ';			$r .= 'href="'.$item->url.'">'.$item->label."</a></li>\n";		}		$r .= "</ul>\n";		return $r;	}}?>